Table 2 Corrected mortality of Sitophilus zeamais exposed to NeemPro^® after 1, 3, 7 and 14 days on three maize varieties under laboratory conditions

CLH103

 0

0 ± 0

0 ± 0^c

0 ± 0^b

0 ± 0^c

 0.75

0 ± 0

5 ± 2^bc

32.5 ± 13.92^ab

42.5 ± 9.24^b

 1.5

0 ± 0

30 ± 13.69^abc

52.5 ± 22.59^ab

92.5 ± 4.33^a

 3

0 ± 0

30 ± 3.54^ab

71.25 ± 15.73^a

92.5 ± 4.33^a

 6

2.5 ± 1.44

43.75 ± 11.43^a

76.25 ± 12.81^a

100 ± 0^a

 F value

3 ns

4.83*

4.36*

75.94***

CMS8501

 0

0 ± 0

0 ± 0^b

0 ± 0^d

0 ± 0^c

 0.75

0 ± 0

3.75 ± 2.39^b

19.73 ± 4.11^c

17.73 ± 6.48^bc

 1.5

0 ± 0

7.5 ± 3.23^ab

56.78 ± 8.04^b

57.95 ± 20.73^ab

 3

0 ± 0

17.5 ± 5.95^ab

77.80 ± 12.37^ab

87.65 ± 6.15^a

 6

1.25 ± 1.25

38.75 ± 11.43^a

93.1 ± 4.28^a

94.55 ± 2.42^a

 F value

1 ns

6.63**

32.99***

16.28***

SHABA

 0

0 ± 0

0 ± 0^c

0 ± 0^b

0 ± 0^c

 0.75

0 ± 0

3.75 ± 2.39^bc

10 ± 4.56^b

10.45 ± 3.56^bc

 1.5

0 ± 0

8.75 ± 1.25^ab

24.25 ± 13.75^ab

26.20 ± 5.18^b

 3

0 ± 0

12.5 ± 3.23^ab

55 ± 9.35^a

67.58 ± 11.92^a

 6

0 ± 0

25 ± 7.36^a

63.75 ± 12.64^a

89.13 ± 6.32^a

 F value

–

6.47**

8.4***

33.18***